Rick: Yesterday, Tyler created a custom Engine.DLL for us - what this basically means is that we have an extremely high access to accessors and other functions that we didn't even know existed. I updated about a third of the wrapper today to fit the changes, but I will still need about a week for it to be done.
Fear not however, you may use the current version. Some things will have changed, but they are mostly internal. Therefore, you may only have to adapt slightly when the new version comes out.
For instance, "Window.HasRequestedClose()" has changed from a function to a property. Therefore, you only call "Window.HasRequestedClose" (without the parenthesis) now. If you do not wish to revise your code for such conventions when the new version comes out, I suggest you wait. If you don't mind, however, feel free to start your project right now.
The official given delay for the new version is "within the month". I do think, however, it will be ready within next week.
Enjoy your development